Plant specialized metabolites (PSM or secondary metabolites) play an important role in plant physiology, food production, cosmetics, and medicine. PSMs are involved in various plant functions including resistance to biotic and abiotic stress, symbiotic association, and pollination attraction. The understanding of PSM biosynthesis is essential to improving plant response to ecological challenges, as well as producing sustainable and cost-effective methods for high-value metabolite production. PSM production is largely influenced by plants' internal and external cues. A more thorough understanding of PSM biosynthetic pathways and regulation is necessary to ensure crop resilience and sustainable agricultural output. This Research Topic will explore the hidden features of plant-specialized metabolism during stress. Attempts have been made to cover these aspects of plant metabolism, yet further investigation is necessary to update this research area for future scientific endeavors.

This Research Topic aims to address the strategies to identify numerous interplays during stress triggered changes of PSMs. Stress in plants triggers changes in almost all aspects of plant biology, from transcriptional regulation to morphological alteration. Likewise, the regulation of metabolism during stress also assists in the management of stress-induced adverse effects in plants. These metabolites also have high relevance in terms of their utility in human welfare. The goal of this Research Topic is to cover the mechanism associated with regulation of plant metabolism during stress, and how such strategies have been explored to improve the plant metabolite flux. The major focus will be on:

1. DNA-related mechanism during stress.
2. Transcriptional reprogramming during stress-mediated metabolite changes.
3. Regulation of stress-responsive transcription factors (TFs) and miRNAs and their interaction with PSM.
4. Reactive oxygen and nitrogen species (RONS) regulation during stress and its interaction with PSM.
5. Plant engineering for desired metabolic profile.

This Research Topic will focus on various aspects of stress-induced regulation of specialized (secondary) metabolites and particularly involves the significance of elicitors (physical, chemical, and biological). Elicitor-induced changes in plant biochemistry and transcriptional reprograming and its subsequent impact on metabolite regulation will also be considered. This involves DNA-related mechanism and TFs-mediated regulation of PSM, miRNA mediated regulation of PSM, gasotransmitters (NO, H2S and CO)-mediated regulation of PSM, ROS/RNS-mediated regulation of PSM, protein kinase-mediated regulation of PSM, calcium mediated regulation of PSM and transport engineering of PSM.

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Frontiers in Plant Science

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